Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Effects of inoculation of EPS-producing Pantoea agglomerans on wheat rhizosphere aggregation
Autore:
Amellal, N; Bartoli, F; Villemin, G; Talouizte, A; Heulin, T;
Indirizzi:
Univ Nancy 1, Ctr Pedol Biol, CNRS, UPR 6831, F-54501 Vandoeuvre Nancy, France Univ Nancy 1 Vandoeuvre Nancy France F-54501 01 Vandoeuvre Nancy, France Fac Sci Dhar el Mehrez, Dept Biol, Atlas Fes, Morocco Fac Sci Dhar el Mehrez Atlas Fes Morocco Dept Biol, Atlas Fes, Morocco CEA Cadarache, DSV DEVM, Lab Ecol Microbienne Rhizosphere, CNRS,UMR 163, F-13108 St Paul Durance, France CEA Cadarache St Paul Durance France F-13108 108 St Paul Durance, France
Titolo Testata:
PLANT AND SOIL
fascicolo: 1, volume: 211, anno: 1999,
pagine: 93 - 101
SICI:
0032-079X(1999)211:1<93:EOIOEP>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOIL AGGREGATION; ROOTS; WATER; GROWTH; POLYSACCHARIDE; MICROORGANISMS; STABILIZATION; COLONIZATION;
Keywords:
EPS-producing bacteria; rhizosphere; soil microbiology; soil physics;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Amellal, N Univ Nancy 1, Ctr Pedol Biol, CNRS, UPR 6831, BP 5, F-54501 Vandoeuvre Nancy, France Univ Nancy 1 BP 5 Vandoeuvre Nancy France F-54501 ancy, France
Citazione:
N. Amellal et al., "Effects of inoculation of EPS-producing Pantoea agglomerans on wheat rhizosphere aggregation", PLANT SOIL, 211(1), 1999, pp. 93-101

Abstract

The effect of bacteria secreting an extracellular polysaccharide (EPS) on the physical properties of rhizosphere soil has been investigated as a function of soil water content by using an approach in which wheat seedlings were inoculated with a strain Pantoea agglomerans (NAS206) selected from the rhizosphere of wheat (Triticum durum L.) growing in a Moroccan vertisol. Colonization by strain NAS206 occurred both on the rhizoplane and the root-adhering soil as opposed to the bulk soil. The intense colonization of the wheat rhizosphere by these EPS-producing bacteria was associated with significant aggregation and stabilization of root-adhering soil, as shown by the combined increases of (i) aggregate mean weight diameter (MWD), (ii) aggregate macro-porosity (pore throat diameter between 10 and 80 mu m), (iii) adhering soil:root mass ratio (RAS/RT), (iv) water-stable > 200 mu m aggregatesand (v) 0.1-2 mu m elementary clayey micro-aggregates. Biological exudation and capillary pressure interactions leading to root-adhering soil aggregation are also analysed and discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 17:24:15